Supergun Problem

[Steve]

I've been reading this forum for a while now but haven't posted before.
I'd been playing video games for about 15 years but had lost interest in shooters until I played Ketsui at the Casino last year.
This (and some encouragment from my mate Leeram - off this forum) convinced me that there where some good shooters.
Since then I've been enjoying all the recommendations off this site - DDPDOJ, ESPgaluda, Mushi, Gradius V, Ikaruga (Didn't like Ibara though - cheap game).

Just returned from this years trip to London which has convinced me to buy Ketsui (too good a game to not play regularly).
I've got a Supergun and the Ketsui PCB and it plays fine on my plasma screen.
The problem is on my 21" Flatscreen CRT the screen has a severe vertical flicker (its actually a horizontal flicker as the screen is permenantly in tate).

Does anyone on the board have any idea what can be causing this ? (I've checked all the connections and all my other systems play fine on this screen).

Regards,
Steve.

[PC Engine Fan X!]

I've been reading this forum for a while now but haven't posted before.
I'd been playing video games for about 15 years but had lost interest in shooters until I played Ketsui at the Casino last year.
This (and some encouragment from my mate Leeram - off this forum) convinced me that there where some good shooters.
Since then I've been enjoying all the recommendations off this site - DDPDOJ, ESPgaluda, Mushi, Gradius V, Ikaruga (Didn't like Ibara though - cheap game).

Just returned from this years trip to London which has convinced me to buy Ketsui (too good a game to not play regularly).
I've got a Supergun and the Ketsui PCB and it plays fine on my plasma screen.
The problem is on my 21" Flatscreen CRT the screen has a severe vertical flicker (its actually a horizontal flicker as the screen is permenantly in tate).

Does anyone on the board have any idea what can be causing this ? (I've checked all the connections and all my other systems play fine on this screen).

Regards,
Steve.

For Steve,

My suggestion is to use a true low-resolution RGB monitor such as the Commodore Amiga RGB monitor...they work like a charm. ^_~ (Although you will have to rig up an adapter cable to get RGB extracted from your Supergun to such an RGB analog monitor. An LCD-based monitor isn't recommended for such low-res 15 kHz arcade jamma PCBs...makes them look like shit -- my opinion, of course). Sure, I've tried playing Mame32 on an LCD flat screen monitor -- actually looks better on a traditional CRT-based analog PC monitor.

Sure, there are some generic "Gamebox" arcade Jamma PCBs out there in the "woods" that are nothing more than a standard PC with loaded up with Win98SE OS and a HDD with a bunch of arcade roms running DosMame emulation + ArcadeOS along with a few other various utility programs to interface with a standard arcade cabinet's or Supergun's game input controls and is powered by a standard ATX power supply. A secondary layer PCB above the the guts of a 900 mHz powered CPU is a J-PAC output Jamma edge connection interface to hook up to an arcade cab or Supergun. I do have such a "Gamebox" Jamma PCB myself...an interesting arcade PCB odditity in itself but it works like a charm indeed.

You can also pick up any one of the Microcom produced XRGBs upscan convertors: the XRGB-1, XRGB-2, XRGB-2+ or the current XRGB-3 and play your arcade PCBs on either an analog CRT-based PC monitor or an LCD-based PC monitor (although the XRGB-1 and XRGB-2 are designed primarily for the CRT-based analog PC monitors only) by using a 21-pin Japanese RGB cable setup.

PC Engine Fan X! ^_~